Quality ratings of frequency-compressed speech by participants with extensive high-frequency dead regions in the cochlea

Abstract

OBJECTIVE: The objective was to assess the degradation of speech sound quality produced by frequency compression for listeners with extensive high-frequency dead regions (DRs). DESIGN: , of each DR. Thus, the value of Sf often fell below the lowest value currently used in clinical practice. Several compression ratios were used for each value of Sf. Stimuli were sentences processed via a prototype hearing aid based on Phonak Exélia Art P. STUDY SAMPLE: Five participants (eight ears) with extensive high-frequency DRs were tested. RESULTS: . CONCLUSIONS: , and for greater values of CR. Results varied across participants.